Anapole moment of the lightest neutralino in the cMSSM

We study the anapole moment of the lightest neutralino in the constrained Minimal Supersymmetric Standard Model (cMSSM). The electromagnetic anapole is the only allowed electromagnetic form factor for Majorana fermions, such as the neutralino. Since the neutralino is the LSP in many versions of the...

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Bibliographic Details
Published in:Nuclear physics. B 2016-06, Vol.907, p.1-17
Main Authors: Cabral-Rosetti, Luis G., Mondragón, Myriam, Reyes-Pérez, Esteban
Format: Article
Language:English
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Summary:We study the anapole moment of the lightest neutralino in the constrained Minimal Supersymmetric Standard Model (cMSSM). The electromagnetic anapole is the only allowed electromagnetic form factor for Majorana fermions, such as the neutralino. Since the neutralino is the LSP in many versions of the MSSM and therefore a candidate for dark matter, its characterization through its electromagnetic properties is important both for particle physics and for cosmology. We perform a scan in the parameter space of the cMSSM and find that the anapole moment is different from zero albeit very small (
ISSN:0550-3213
1873-1562
DOI:10.1016/j.nuclphysb.2016.03.025